Tubular lantern.



PATENTED JAN. 10, 1905 F. C. CANNON. TUBULAR LANTERN. APPLICATION FILEDJUNE 27, 1904 UNITED STATES Patented January 10, 1905.

PATENT OEEIcE.

FREDERIC C. CANNON, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE C. COWLES& CO., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

TUBULAR LANTERN.

SEECIFICATION forming part of Letters Patent No. 779,586, dated January10, 1905.

Application filed June 27, 1904. Serial No. 214,233.

T 61/ whmn it flea/y concern.-

Be it known that I, FREDERIO C. CANNON, of New Haven, in the county ofNew Haven and State of Connecticut, have invented a new and usefulImprovementin Tubular Lanterns; and I do hereby declare the following,when taken in connection with the accompanying drawings and the numeralsof reference marked thereon, to be a full, clear, and exact descriptionof the same, and which said drawings constitute part of thisspecification, and represent, in'

Figure 1, a broken view, partly in vertical section and partly inelevation, of the upper portion of a tubular lantern constructed inaccordance with my invention; Fig. 2, a broken view, in horizontalsection, on the line a Z) of Fig. 1; Fig. 3, a detached reverse planview of the bell; Fig. i, a detached view of the bell in side elevationlooking at one of its air-outlet openings and showing thevertically-arranged supplemental fender located trance of air into theupper ends of the tubes is so guarded that Violent movement of thelantern or its exposure to strong currents of air Wlll be nullified andnot materially affect the even flow of air downward through the tubes tothe burner. IVith these ends in view my invention consists in certaindetails of construction and combinations of parts, as will behereinafter described, and pointed out in the claims.

In carrying out my invention, as herein shown, I employ adownwardly-opening bell 2, having lateral air-outlet openings 3, locatedat opposite points in it and leading into the upper ends of the tubes 4,which are secured to the sides of the bell, so as to register with thesaid openings 8. At its upper end the bell is provided with a low cone5, having a sloping face 6, containing the upper air-inlet openings 7,which lead downward into the upper end of an annular air-chamber 8,formed between the bell and a fixed ring 9, arranged concentricallywithin the same. As shown, the cone 5 is formed with four air-inletopenings 7; but this number may be increased or decreased, as desired.However, those portions 5 of the cone located directly above the upperends of the tubes 4 will not be cutaway, but left intact for the betterprotection of the tubes from sudden inrushes of air from above. The saidring 9 has its upper end turned inwardly to form a flange 10 to guidethe upper end of the vertically-movable metal chimney or sleeve 11,which is provided at its upper end with the usual top plate or dome 12and adapted at its lower end, which is furnished with a band ofperforations 13, to receive the upper end of the globe 14:. The loweredge of the fixed ring 9 is bent upwardly at an acute angle to form aflange-like fender 15, the edge of which is secured within the lower endof the bell 2. This fender 15 contains the lower air-inlet openings 16,which correspond to the upper air-inlet openings 7 and open into thelower portion of the annular air-chamber 8. In the said chamber 8 Ilocate two horizontal fenders 17, nearly semicircular in form andarranged in the median plane of the air-outlet openings 3, with theirends terminating at the lateral edges thereof. These fenders break upany sudden downward rush of air through the air-inlet openings 7 and anysudden upward rush of air through the air-inlet openings 16; but as anadditional safeguard and to prevent any undue circular movement of airin the chamber 8 I employ two verticallyarranged fenders 18, secured bytheir inner edges to the fixed ring 9, arranged to extend approximatelyfrom the top to the bottom of the air-chamber 8 and located centrallyback of the circular air-outlet openings 3 and midway the spaces betweenthe ends of the horizontal fenders 17, to which they stand at a rightangle. These supplemental fenders 18 are narrower than the full width ofthe chamber 8, so as to permit air to pass over their outer edges, butin a space so contracted that its violence or force is nullified. Thehorizontal fenders 17 virtually divide the airchamber 8 into twochambers located one above the other, while the vertical fenders 18virtually divide the said air-chambers into two vertical chamberslocated side by side.

Under the construction described the lantern may be swung by its bail ormoved swiftly upward or downward, as in signaling, or exposed to strongdrafts of air without having the currents passing downward through thetubes 4: materially disturbed.

Otherwise than as described my lantern may be of any approvedconstruction. As shown, the inwardly-turned flange 10 forms an abutmentfor the upper end of a coiled spring 19, which holds the metal chimney11 down upon the globe 14, the lower end of the said spring bearing upona shoulder 20, formed upon the outside of the chimney 11.

It is obvious that in carrying out my invention some changes from theconstruction herein shown and described may be made. I would thereforehave it understood that I do not limit myself thereto, but hold myselfat liberty to make such variations therein as fairly fall within thespirit and scope of my invention.

Having fully described my invent-ion, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a tubular lantern, the combination with a bell containing anannular air-chamber and formed with two lateral air-outlet openings, oftwo tubes connected at their upper ends with the said bell to registerwith the said openings, two horizontally-arranged segmental fenderslocated opposite each other within the said chamber and terminating atthe side edges of the said openings, and two vertically-arrangedsupplemental fenders located within the said chamber at points centrallybetween the ends of the said segmental fenders.

2. In a tubular lantern, the combination with a bell containing anannular air-chamber and formed with two lateral air-outlet openings, oftwo tubes connected at their upper ends with the said bell to registerwith the said openings, two horizontally-arranged segmental fenderslocated opposite each other within the said chamber and terminating atthe side edges of the said openings, and two vertically-arrangedsupplemental fenders located within the said chamber at points centrallybetween the ends of the said segmental fenders, that portion of the belllocated directly above the upper ends of the said tubes beingimperforate.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

FRED. O. CANNON. Witnesses:

CLARA L. W'EED, GEORGE D. SEYMOUR.

